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    <!-- 计算[2, 6, 18, 15, 40] 中能被3整除的偶数的个数 -->
    <script>
        let array = [2, 6, 18, 15, 40]
        let b = 0
        for (let index = 0; index < array.length; index++) {
            const element = array[index];
            if (element % 3 == 0 && element % 2 == 0) {
                b++


            }
        }
        console.log(b);
    </script>
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